MAX6420UK47+T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Adjustable Thresholds
• Package: SOT23-5
• Essence: Monitors and controls the voltage levels in electronic systems
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active-Low, Open-Drain
• Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V, 4.63V
• Quiescent Current: 1µA (typical)

Detailed Pin Configuration

1. GND: Ground connection
2. RESET: Active-low reset output
3. TH: Threshold voltage selection pin
4. MR: Manual reset input
5. VCC: Supply voltage input

Functional Features

• Monitors the supply voltage and asserts a reset signal when it falls below the programmed threshold.
• Provides a manual reset option for system initialization.
• Offers adjustable threshold voltage options to suit different applications.
• Low quiescent current consumption ensures minimal power usage.

Advantages

• Precise monitoring of voltage levels enhances system reliability.
• Adjustable thresholds allow customization for specific requirements.
• Low-power operation prolongs battery life in portable devices.
• Small package size enables space-saving designs.

Disadvantages

• Limited threshold voltage options may not cover all voltage ranges.
• Lack of built-in hysteresis may result in potential oscillations near the threshold voltage.

Working Principles

The MAX6420UK47+T is a voltage supervisor IC that continuously monitors the supply voltage of an electronic system. It compares the voltage level with a programmed threshold and asserts a reset signal when the voltage falls below the threshold. The threshold voltage can be adjusted using the TH pin, allowing flexibility in setting the desired voltage level for triggering the reset.

The IC operates with low quiescent current, ensuring minimal power consumption. It features an active-low, open-drain output that can be connected to a microcontroller or other logic devices. Additionally, the MR pin provides a manual reset option, allowing the system to be initialized manually.

Detailed Application Field Plans

The MAX6420UK47+T is widely used in various applications where reliable voltage monitoring is crucial. Some potential application fields include: 1. Battery-powered devices: Ensures proper shutdown or system reset when the battery voltage drops below a safe level. 2. Industrial control systems: Monitors power supply integrity to prevent damage to sensitive equipment during voltage fluctuations. 3. Automotive electronics: Protects critical components from voltage dips or spikes, enhancing overall system reliability. 4. Home automation: Safeguards smart home devices by detecting abnormal voltage conditions and triggering appropriate actions.

Detailed and Complete Alternative Models

• MAX6421UK46+T
• MAX6422UK44+T
• MAX6423UK43+T
• MAX6424UK42+T
• MAX6425UK41+T

These alternative models offer similar functionality but may have different threshold voltage options or package sizes to cater to specific requirements.

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